Fill, A. F. (2010). Language impact: Evolution - system - discourse. Equinox.
Lua i Stíl Chicago (17ú heag.)Fill, Alwin Frank. Language Impact: Evolution - System - Discourse. London ; Oakville, Connecticut: Equinox, 2010.
Lua MLA (9ú heag.)Fill, Alwin Frank. Language Impact: Evolution - System - Discourse. Equinox, 2010.
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